Door-pivot.



J. A. CROSS.

DOOR PIVOT.

APPLICATION FILED FEB. 25. 1915.

Patented Nov. 23, 1915.

mmvron John Alvin Cross A TTORAIEVS JOHN ALVIN CROSS, 0F WESTWOOD, NEW JERSEY.

DOOR-PIVOT.

menses;

Specification of Letters Patent.

Patented Nov. 23, 1915.

Application filed February 25, 1915. Serial No. 10,469.

To all whom it may concern:

Be it known that I, JOHN ALVIN Cnoss, a citizen of the United States, and a resident of Westw'ood, in the county of Bergen and State of New Jersey, have invented a new and Improved DoorPivot, of which the following is a full, clear, and exact description.

My invention relates to pivots for doors or similar closures, and which pivot is adapted to raise the door or closure bodily when the same is moved to the closing position, whereby the door or closure is jammed into the frame and thereby locked in the closed position.

The object of the invention is to provide a simple, strong and inexpensive pivot characterized by an inclined plane on which a ball is mounted to travel.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views, and Figure 1 is a front elevation of a door and frame provided with an embodiment of my invention, the frame being partly in section to show the details of construction; Fig. 2 is a similar view showing an edge of the door; Fig. 3 is an enlarged sectional view through my pivot; Fig. 4 is part elevation and part section of the pivot showing the upper part turned through an angle of 90 degrees; Fig. 5 is a perspective section of the socket having the incline; and Fig. 6 is a horizontal section on line 6-6, Fig. 8.

Referring to the drawings, 7 represents a door frame in which a. door 8 is pivotally mounted by means of pivots located adjacent alining corners of the door at the upper and lower edges thereof. The upper pivot is formed of a socket 9, located within the upper part of the door frame, and a pin 10 carried by the door at the upper edge. In alinement with the pin 10 is a pin 11 secured to the lower edge of the door. This pin has a reduced end 12 and a lateral flange 13 at the other end of the pin 11 whereby the same is secured to the edge of the door. Engaging the pin 11 is a socket 14: which has a lateral flange 15 at the open end. By

means of this flange 15 the socket is secured to the floor.

The socket l4c'is provided with a reduced central bore which accommodates the reduced end 12 of the pin 11, and for which this bore forms a hearing. A surface 16 formed by the reduction of the opening in the socket is inclined to the axis of the socket. The highest point of the inclined surface 16 is so related to the door frame that a plane passing through the highest point and the center of the socket is substantially parallel to the plane of the door frame.

The door being pivoted within the door frame, the same can only swing within an arc of about 180 degrees, consequently the incline of the surface does not need to exceed that arc and, therefore, one-half of the surface 16 is inclined while the other half is substantially horizontal. At the junction of the inclined portion of the surface with the horizontal portion recesses 17 are provided which are intended to engage a ball 18 engaged by a recess 19 of the pin provided in the shoulder of the pin 11. l/Vhen any of the recesses engages the ball 18, the door is prevented from swinging in the open position, as indicated in Fig. 2. The engagement of the ball 18 with the recess 19 of the pin 11 causes the ball to travel with the pin 11 which is secured to the door 8. Therefore when the door is swung from the position shown in Fig. 2- to the position shown in Fig. 1, the ball 18 is caused to ride upon the incline of the surface 16, this: incline being such that when the ball approaches the highest point, as shown in Fig. 5, the upper edge of the door 8 is caused to jam against the upper edge of the door frame 7.

From the above description it will be seen that my door pivot and closure consists of a stationary socket having an interior inclined shoulder which is engaged by a movable pin having a shoulder, which shoulder carries a ball adapted to ride on the incline, the incline being provided with means for arresting the swinging movement of the door at the ends of the incline.

From the foregoing description, taken in connection with the accompanying drawings, the advantage of the construction and operation of the device shown will be readily understood by those skilled in the art to which the invention pertains; and whileI have described the principle of operation,

together With the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are Within the scope of the appended claim. v

Having thus described my invention, I claim as new and desire to secure by Letters Patent: J In a device of the class described, a stationary socket having an interior, annular surface a part of which surface is inclined to the axis of the socket and a part, at right angles to the axis of the socket, a movable pin engaging said socket, said pin having a Copies of this patent may be obtained for shoulder, and a ball carried by the pin within the shoulder, a portion of said ball projecting to engage the annular surface of the socket, said socket having recesses at the juncture of the inclined portion of the annular surface with the part thereof at right angles to the axis.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JOHN ALVIN CROSS.

Vvitnessesz- JOHN E. HARING, HARRY THUDNALL.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

